E2IE is the only item editor for the game Exile 2 (to the best of my knowledge) It's simple to use. Just load your save game (back it up first, just in case), edit the statistics of the item as needed, save the item, and load up your game in Exile 2. Note that you can only edit one item at a time, so save before you change items.
This program has no affiliation with Spiderweb Software, or Jeff Vogel. There is no guarantee for this program. It worked on my computer just fine, and should work on yours. It is, to the best of my knowledge, virus free, but you should always scan anything you download. Written in MS VB 6.0